TY CONF TI COMPOSITE MATERIALS FROM WOOD WASTE KW wood waste KW birch bark KW technology KW composite material KW processing JO ENERGY-SAVING AND ENVIRONMENTALLY SAFE TECHNOLOGIES OF THE TIMBER INDUSTRY – 2025 AU Chernykh, A.S. AU Rublev, I.Y. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov